Implementation of Nonlinear power flow controllers to control a VSC

The voltage source converters VSCpsilas are power converters highly used in systems of distributed generation, HVDCpsilas and motor drivers, thanks to the feasibility and facility to control the active and reactive power independently, in a fast and effective way. This paper presents the analysis, design and results obtained in digital simulation and in physical implementation, of nonlinear controllers applied to a VSC prototype, to control independently the active and reactive power flow. There are two control strategies. Firstly a fuzzy control based on linguistic rules was proposed, however it present a high computational cost in time, hence was proposed an Artificial Neural Network as a dynamic emulator of the fuzzy control. The computational time in simulation was compared between the two intelligent controllers. All the simulations were done in (MATLABreg/SIMULINKreg). Finally the system composed by the VSC and the controllers was implemented.